3INSTALLATION AND CONNECTIONS

Connection

The digital video recorder supports both straight type and crossed type connection cables.

When using a straight type connection cable, connect the RS-485 connector’s pin A to the pin A socket, or pin B to the pin B socket.

When using a crossed type connection cable, connect the RS-485 connector’s pin A to the pin B socket, or pin B to the pin A socket.

 

A RS485 B

DO

CONNECT PHONE LINE

To other

 

 

 

 

 

 

 

 

 

 

 

 

 

To other

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connector A

 

 

 

 

 

 

 

connector A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Straight type cable

 

Crossed type cable

Cable types

Straight type:

 

 

1

Not used

1

Not used

2

2

 

3

 

3

4

Not used

4

5

5

Not used

6

6

 

Crossed type:

 

 

1

Not used

1

Not used

2

2

 

3

 

3

4

 

4

RS-485 termination switch settings

When connecting multiple devices, you must make termination settings on both end devices.

zSet the RS-485 termination switch of both end devices to ON.

zBe sure to set the RS-485 termination switches of all devices in between (devices other than the first and last devices) to OFF.

zIf you don’t make the correct termination settings, the incorrect data will be transmitted to each device.

Example

System controller

ON Termination switch

OFF

Digital video recorder

RS-485

OFF ON termination

INTRODUCTION

5

Not used

5

6

6

Not used

 

 

Time-lapse VCR

ON

switch

Termination switch

OFF

12

English

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Image 13
Sanyo DSR-3709, DSR-3716 Installation and Connections, Cable types, RS-485 termination switch settings, Example